That is a gauge face from a Mercury Cougar.
What I did was buy a Cougar gauge cluster complete. Then I pulled it apart and swapped the gauges into the Focus cluster. Everything works right off the bat but, the tach is actually reads wrong. The sweep range is the same as the Focus. I have not found a way to correct that yet. The light comes on @ 7.5k.

The plan is to wire in the full Cougar cluster. I'm hoping that then the tach will read correct. I have all the parts to do it, have just been too lazy to make the swap harness.